For monthes, some European guilds could not play on European servers due to lag/disconnection problems. They had to go on US servers for a while. When A.Net announced that changing servers would cost something we went back on European servers (just a few weeks ago) and started once again the guild XP grind from scratch.
For a small guild, it takes monthes to unlock all the levels. Well, we have been playing for monthes, but due to the poor quality of service we experienced in Europe for monthes, the points of my guild are spread over three servers (two European, one US) and we have only been on our actual server for a month or so.
Creating new content is nice, letting people access it is better! And compensating for your mistakes (aka LAG !!!) and the consequences it had on the guilds would be nice (aka give me my guild points back !!!).